Fountain-pen.



D W. BEAUMEL.

FOUNTAIN PEN.

APPLICATION FILED NOV-4,1911.

Patented J an. 25, 1916.

[I'll 1111111111111!!!- W WITNESSES:

DAVID W. BEAUMEL, OF BROOKLYN, NEW YORK.

FOUNTAIN -1?E1 T.

Specification of Letters Patent.

Patented Jan. 25, 11916.

AppIication filed November 4, 1911. Serial No. 658,546.

To all whom it may concern:

Be it known that I, DAVID VVILLIAM BEAU- MEL, a citizen of the UnitedStates, residing at No. Madison street, Brooklyn, county of Kings, Stateof New York, have invented certain new and useful Improvements inFountain-Pens; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to certain new and useful improvements in fountainpens, particularly of that type wherein the supply of ink is containedin a flexible tube of soft rubber located within the pen case, whichtube is filled by collapsing it by means of pressure applied to itswalls through the instrumentality of a pressure bar extendinglongitudinally of it and which is adapted to be depressed by theoperator through an aperture provided in the walls of the case, whichaperture is normally covered by a sleeve when the pen is in use. Infilling fountain pens of this character, the flexible tube of softrubber is collapsed by the operator, in the manner indicated, the penpoint together with the open end of the collapsed tube is inserted in anink well, and the pressure upon the collapsed tube being then removed,it resumes its original form and vol.- ume and becomes filled with asupply of ink from the well.

It is the purpose of my invention, as will hereinafter more fullyappear, to increase the durability of the collapsible tube andconsequently of the fountain pen as a whole, by substituting for themetal bar or strip heretofore employed for collapsing the tube, a stripof hard rubber, thereby avoiding the corrosive action of the metal baror strip, and, at the same time by suitably curving or rounding theedges of the hard rubber bar or strip eliminating the cutting orabrading action of the metal strip formerly employed, and whichmaterially cut down the last quality of the soft rubber font.

My invention is further characterized by a particular manner ofassociating the rotary slide with the case of the pen, in such mannerthat it will remain by frictional contact securely in the position towhich it is rotated, and so that the circular groove in the outerperiphery of the case for engagement with the pin in the sleeve isreinforced and protected against strains that would otherwise tend tobreak the case at that point.

in the accompanying drawings, Figure 1 represents in perspective, afountain pen embodying my invention, the rotary sleeve being shown inthe adjustment required for compressing the flexible or collapsibleinkcontaining tube; Fig. 2 represents a longitudinal sectional view, ona slightly larger scale and with the protecting cap removed; Figs. 3 andat represent, on a still larger scale, crosssectional views on the lines3-3 and e 4l; Fig. 5 represents a like view to that shown in- Fig. 4 butwith the sleeve revolved to the closed position.

Similar letters of reference indicate simi lar parts throughout theseveral views.

Referring to the drawings, A indicates the case of the pen and Bindicates the usual cap for protecting the pen-point end when the pen iscarried in the pocket, these parts being, as usual, of hard rubber.Within the case A is contained the removable font or ink-carrying tube6, communicating with the customary plug a and in communication in theusual way with the pen-point 0, as is well understood by those versed inthe art. The font Z) is collapsible and is made of soft rubber. I

The means for collapsing the font consists of a strip of hard rubber 0,cemented by rubber cement to the outer wall of the font, and provided atits lower edges with rounded portions (Z, so that when depressed anytendency for the tube to be out or abraded along these edges will beeliminated. The fact that the strip 0 is of hard rubber and is likewisecemented to the soft rubber font by rubber cement, presents acombination wherein tendency to corrode, which is always present inthose instances where metal strips are applied to the soft rubber tube,is entirely avoided, the tube, its cementing material and the pressurebar or strip being generically of the same material devoid of chemicalaction the one upon the other.

The case A is provided with the hard rubber sleeve C and is providedwith an aperture 6 with which is adapted to register a like aperture 7in the sleeve, so that when these apertures are in alinement as shown inFigs. 1 and 2, the pressure bar may be depressed so as to collapse thefont and to fill it with ink in the manner hereinbefore described. Thesleeve 0 is fixed against longitudinal movement upon the case A, bymeans of a pin 9 of metal inserted in the lower part of the sleeve andon the side opposite to that which contains the opening f, that is tosay, on that side of the sleeve which is the stronger because it has notbeen weakened by the making of the opening f. The pin 9 engages with acircular groove hv made in the hard rubber case A, and this groove, aswill be noted, is protected-by thelower portion of the sleeve, as isindicated more fully in Fig; 2, so that any bending strain which wouldotherwise be liable to break the case along this groove is efiicientl-yand fully guarded against, and so that, with the reinforcement affordedby the sleeve, the casing is in no way weakened in its resistance totransverse strains in spite of the fact that it is grooved for thereception of the pin 9'.

The further advantage of connecting the sleeve with the case by means ofthe pin and groove connection shown is that the sleeve may be made withan mner diameter so 5 exactly like that of .the external diameter of thecase that it will make so tight a fit therewith as to insure the sleevefrom accidental ly shifting itsposi-tion after it has been set either totheopen' or closed adjustment of its aperture f. This is of notableimportance in the general organization, for the obvious reason thatunless thus securely and reliably held, the sleeve would tend to shiftin the pocket of the user, thereby opening the closure which protectsthe pressure bar or strip a, which is, of course, to be avoided.

Having thus described my invention what I claim is:

In a self-filling fountain pen, the combination of a barrel having anopening in its side and having its periphery practically uniform for thegreater part of the length of the barrel, a collapsible and expansibleink-holding tube located Within the barrel and upon which pressure maybe applied through said opening in the side of the barrel, a non-splitsleeve mounted upon the periphery of said barrel with capacity ofrotation thereon and with a snug fit so as to itself maintain itsposition of angular adjustment on said barrel, the said sleeve beingprovided with an opening in its side adapted to register with theopening in said barrel by rotating said sleeve, the said barrel havingits walls of practically uniform thickness in the vicinity of saidsleeve and being provided with a peripheral pin-receiving groove, and apin located upon the interior of said sleeve at a point remote from theopening in said sleeve and engaging with said groove for holding thesleeve against longitudinal movement, the said sleeve covering the saidgroove and thereby reinforcing the barrel against breaking strains atthe groove, substantially as described.

In testimony whereof I ailix my signature, in presence of two witnesses.

DAVID W. BEAUMEL.

\Vitnesses:

JOHN C. PENNIE, MINERVA LOBEL.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of latents,

' Washington; D. C.

